Sökning: "galaxies: interstellar medium"

Visar resultat 6 - 10 av 32 avhandlingar innehållade orden galaxies: interstellar medium.

  1. 6. Molecular Gas in Seyfert Galaxies

    Författare :S.J. Curran; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; star-burst-nuclei-dynamics; galaxies; star-burst-nuclei-kinematics; interstellar medium molecules; Seyfert;

    Sammanfattning : In this report we present the results of a single dish study of the molecular gas properties in Seyfert galaxies. From the observations of the closest lying example, the Circinus galaxy, we find that about half of the molecular gas is distributed in a circumnuclear ring orbiting the central super-massive black hole, believed to be powering this type 2 Seyfert. LÄS MER

  3. 7. Exploring the nature of ISM turbulencein disc galaxies

    Författare :Timmy Ejdetjärn; Göran Östlin; Oscar Agertz; Garrelt Mellema; Troels Haugbølle; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; galaxies; galaxy; disc galaxy; star formation; ISM; interstellar medium; kinematics; dynamics; evolution; turbulence; numerical; Astronomy; astronomi; teoretisk astrofysik; Theoretical Astrophysics;

    Sammanfattning : Galaxy formation is a continuous process that started only a few hundred million yearsafter the Big Bang. The first galaxies were very volatile, with bursts of star formationand disorganised gas motions. LÄS MER

  4. 8. Molecular gas and ionizing radiation in star-forming galaxies

    Författare :Johannes Puschnig; Matthew Hayes; Göran Östlin; Amélie Saintonge; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; astrophysics; galaxies; star formation; starburst; interstellar medium; Lyman continuum; Lyman alpha; reionization; gravitational instability; molecular gas; clump formation; Astronomy; astronomi;

    Sammanfattning : In cosmic history, some of the major changes such as reionization were driven by baryons (i.e. the stars and gas in galaxies), despite the fact that they contribute only few percent to the total mass-energy budget in the Universe. LÄS MER

  5. 9. Molecular clouds and star formation in galaxies

    Författare :Tommy Wiklind; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; molecular radio lines; interstellar medium; Early type galaxies; galaxy kinematics and dynamics; spiral galaxies;

    Sammanfattning : .... LÄS MER

  7. 10. Interstellar molecules in the Magellanic clouds

    Författare :Arto Heikkilä; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; abundances; interstellar medium: molecules; galaxies: interstellar medium; magellanic clouds; abundances;

    Sammanfattning : .... LÄS MER